Lifting valve



May 3 1927. 1,627,299

w. G. WILSON LIFTING VALVE 1 Filed Jan. e, 192e patented Ma? 3, 1927i UNITEDN STATES n 1,62*;299 PATENT oFFlcEr l XVYLIE 'GEMMEL WILSON, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO SEAT VALVE COMPANY, 0F DOVER,'DELAWARE, .A CORPORATION OF DELAWARE.

`Llrrnvef VALVE.

.Application .filed January This invention reletefsto improvements Vin vulves. ,lts object ie to produce e nou-etickine` valve having e tluid-tight port joint in `Which one of the complementary sealing); surfeces e` `flirt weil enclosing a.` portl end in which the other seeding surface is of cour put-ted. llzitwise superposed, united, negligibly or approximately ineluetic materiel shown Wound upon itself, :is und for pur.- posles more fully deecribed hereinelten fn the druwing formingl u part `hereof Lind illustrutingl the. invention, thevievv e vertical, centrelly sectiioi'ielized `elevation. of :i valve'tcnliuining the invention. y

lin the driiivine-s the. under casing' member l h-.ie u dinphragn'i formed with u threaded opeuii'ip; between the intake and discharge clnnnberis of the valve ciieing. .'iising niember jl iileo hns e port 3 und e port et oneor the other of which fern und one or vthe other 01"' (which forms a, diechzro'e port. Clisinp; melnliier l has :i flange bolted to u flange of the bonnet T by boite` tl und nuts l). ik gmsketxll() ie interioeed between the. flirnigee und the upper ci intl; member ie iu'ovided with the usuel interior mennel for oltrrying` e threaded valve stem ll. which .es lll is in tl'ireiided engagement with :i threiuileifl hole through the bonnet top und hue n. handle V'll-"for use in recipro"atingl thc spindle to Sent and unseat the reciprociible .eenling member.` rlfhe under end of the stem is provided With `a flanged cnlnrgemerrt l2 which is held in en inverted cupped nut ill through the upper well olf which the Stem passes freely, the nut beiup` threaded into the upetzindinp, unnulnr threaded flange lelof nl carrier l5 for u reciprocilble sealing' member.

urrier lf3 ie it disk circularly.recessed at l() on ite` under fece foru'iing' un annuler side 'ell l?. The bottom of this recess is centrally end eircuhrrly recessed et 18. F rom the bottom of recess i8, zi 'threaded Stud 19 cent ratlly depends` und c-trriee n clmnping` nut 2t). u'hicl'i when homed, is preferably locked in pince by :i cotter pin 2l, the nut then holdii'ig;` in piece it settling ring chunping plete 22 the frontperipheral Wall of which is. inwinfdly und iipwiirdly bevelled :it 223, the buck side of the plete being` reduced in (.liiuueter for entriuice into the recess :1t 1S. The eenling4 rinpA S is locuted in the receeiI ll und hns :i peripheral ivnll opposed to end clamped against the annuler Wall 17 u n intake port a, 1926. `serial No. 79,51'1.

ofthe carrier. The interior,` circumferenj tial ywell of thevseeling ringv is inwardly and upwardly .bevelled from the under, flat sealing' surface 2li of the sealing ring'p'ert Way end nearly to the upper` endinner cir# cumferentiel corner of the settling kring forming e tapered surface at against which thetapered Well .23 of the clempii'il plate isI pressed home by nut 20. Thus,` the .sealing y ring has` e peripheral. .portion Spa-cedly apart from lits sealing .surf-ece end heavily compacted :ig-einst` the; Well 17 und `between theivall 17 and the tapered peripherul `Weill 23 of the,` clamping plate.. lThe seeling'eurfaceend of the settling ringfprojects beyond the end Wall of the ,ring en circling, peripherel Welll? and; elec beyond the fece' of thevclemping plete.y The pe ripherel corner of the sealing ring vadjacent theseelini)` surface is bevelled off The seal forming joint ,is vformed when the valve is seated on the llatjuppe'r 'well of the ported member ithreuded into the diziphragni. The y sealing surface of A.the ring` is annuler end its interior diameter is substantially greater then the diameter of the port or in other Words, the recess in the under fece of the combined nut, clen'iping plete and seeding' ring', due to the projection of the Sealing surface beyond the vfece of the clamping plete, is substantially greater than the cross-sectional area of the port. g v

The Het port enclosingl Wall on which the sealing surface of the settling ringl .is seated' is indicated by 2T and is the upper Wall of :L ported annulus 28 which is threaded et 29 into the diaphragm El() which divides into un intake and outlet chambere the under casing member l. 4

The sealing ring S is made up of succesr sive, flatwise Vsuperposed, strongly compacted, united'liryers X of uniteriel which form e ring of still und of but slightly ,elim

tic character. lt is preferably composed of iisbestosrings or windings und ie only very slightly compreesible.' As :L consequence, it Substantially ret-eins its form under pressure. Being' mede of imited layers commonly vulcanized together, it is necessary to keep it compressed and supported While the valve isin use, because it softens to e considerable but variable extent when Subjected to steam. y

\ One advantage of the described construen tion is that the upwardly or backwardly and inwardly tapering, interior circumferential wall of the packing ring, where it projects beyond` the face ofthe clamping plate, cannot be compressed into the port when the valve is seated and so have edges of the superposed laininae cut or frayed against the sealing ring, the edges of which are in conditions of use.

its sealing "face, are supported both peripherally and interiorly circumferentially by adjacent laininae the ledges of which are bevelled off and the latter bevelled edge larnin also serve as spacers for spacing apart the sealing surface forming laminae from the rigid, interior supporting wall 17 and the rigid, peripheral tapered wall 23 of `the clamping plate. The sealing surilace ot' the sealing ring S is for-ined by edges of its intermediate laininfe, which sealing edges it 'is the object ot' this invention'so to snpport as to prevent fraying or tearing under If tearing or raying is started in the edge of a layer of a sealing surface, yit is apt to be extended to one or more layers in the sealing surface and effect leakage.

This sealing ring of and by itselti forms the subject matter of my application Ser. No.779,568, tiled Jan. 6, 1926, and the present structure is a form of my invention more broadly claimed in my application Ser.

menage No. `79,572, filed Jan. 6, 1926 and allowed May l0, 1926.

What I claim is:

In a valve, the combination with a dense, slightly elastic, valve port sealing annulus of united lainin and which annuliis haa a projecting` sealing surface composed ol laini nae edges between adjacent, tapering laniinae edgesl andwhich annulns also has clainpable surfaces one adjacent each, tapered lainin edge portion; the tapered laniiine serving, when in use, to sustain one another and also to sustain the laminare cd -s in the sealing surface, and then also seri` ,ng as spacers to holdthe sealing surface edges apart from clamping means for engaging said clanlpable surfaces; one of said clalnpable surfaces being a peripheral wall portion and 'the other being an? interior, conical portion olil the annulus; of a carrier for the annnlns, sa' carrier having an annular recess, the cire cular wall of which is in contact with said peripheral wall portion ol the annillus; an annulns clamping plate havingl a conical wall engaging the interior conical portion of the annulus and means/for holding the clamping plate in place andvcolnpressively against said interior conical portion of the annulus.

Signed at New York in the county of New York and State of New York this` 23" day of December, A. D. 1925.

WVYLIE GEMMEL WILSO. 

